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High oleic safflower oil as a feedstock for stable biodiesel and biolubricant production
Industrial Crops and Products ( IF 5.9 ) Pub Date : 2021-06-05 , DOI: 10.1016/j.indcrop.2021.113701
Sergio Nogales-Delgado , José María Encinar , Álvaro González Cortés

Biodiesel and other derivative compounds which could act as biolubricants, can be a suitable alternative for petroleum products, which are less sustainable and harmful to the environment. However, especially when vegetable oils are used as raw materials (for instance Carthamus Tinctorius), these products can show poor oxidative stabilities, depending on their fatty acid composition. Apart from adding antioxidants as additives, a good alternative might be the use of genetically modified seeds to facilitate high ratios of stable fatty acids like oleic acid. The aim of this work was to produce biodiesel and biolubricant from high oleic safflower through transesterification with methanol and 2-ethyl-2-(hydroxymethyl)-1,3-propanediol, respectively. The efficiency of these processes and the quality characterization of biodiesel and biolubricant were assessed. As a result, the biodiesel obtained (HOSBD) complied with the standard, with a high oxidative stability value (8.2 h) and not requiring any antioxidant addition. The biolubricant obtained (HOSBL) showed higher oxidative stability (6.72 h) compared to their equivalents produced from rapeseed (Brassica Napus) or cardoon (Cynara Cardunculus L.). Consequently, two stable bioproducts were obtained and the role of fatty acid composition of raw material was vital (oleic/linoleic ratio had a strong influence on oxidative stability). In that sense, the use of stable raw materials like high oleic safflower might avoid antioxidant addition in biodiesel or biolubricants, which implies a cleaner and more sustainable production.



中文翻译:

高油酸红花油作为稳定生物柴油和生物润滑剂生产的原料

生物柴油和其他可用作生物润滑剂的衍生化合物可以作为石油产品的合适替代品,因为石油产品的可持续性较差且对环境有害。然而,特别是当植物油用作原料时(例如Carthamus Tinctorius),这些产品可能表现出较差的氧化稳定性,这取决于它们的脂肪酸组成。除了添加抗氧化剂作为添加剂外,一个很好的选择可能是使用转基因种子来促进高比例的稳定脂肪酸,如油酸。这项工作的目的是通过分别与甲醇和 2-乙基-2-(羟甲基)-1,3-丙二醇的酯交换反应,从高油酸红花中生产生物柴油和生物润滑剂。评估了这些过程的效率以及生物柴油和生物润滑剂的质量特征。结果,获得的生物柴油(HOSBD)符合标准,具有较高的氧化稳定性值(8.2 h)并且不需要添加任何抗氧化剂。获得的生物润滑剂 (HOSBL) 显示出更高的氧化稳定性 (6.Brassica Napus )或茼蒿(Cynara Cardunculus L.)。因此,获得了两种稳定的生物产品,原料脂肪酸组成的作用至关重要(油酸/亚油酸比对氧化稳定性有很大影响)。从这个意义上说,使用高油酸红花等稳定的原材料可能会避免在生物柴油或生物润滑剂中添加抗氧化剂,这意味着更清洁、更可持续的生产。

更新日期:2021-06-05
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